Critical Thinking - Bug Bounty Podcast – Details, episodes & analysis

Episode 163: In this episode of Critical Thinking - Bug Bounty Podcast It’s that time of year again! We’re looking at the Portswigger Research list of top 10 web hacking techniques of 2025.

Follow us on twitter at: https://x.com/ctbbpodcast

Got any ideas and suggestions? Feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

====== Links ======

Follow your hosts Rhynorater, rez0 and gr3pme on X: 

https://x.com/Rhynorater

https://x.com/rez0__

https://x.com/gr3pme

Critical Research Lab:

https://lab.ctbb.show/ 

====== Ways to Support CTBBPodcast ======

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

You can also find some hacker swag at https://ctbb.show/merch!

====== Resources ======

Parser Differentials: When Interpretation Becomes a Vulnerability

https://www.youtube.com/watch?v=Dq_KVLXzxH8

XSS-Leak: Leaking Cross-Origin Redirects

https://blog.babelo.xyz/posts/cross-site-subdomain-leak/

Playing with HTTP/2 CONNECT

https://blog.flomb.net/posts/http2connect/

Next.js, cache, and chains: the stale elixir

https://zhero-web-sec.github.io/research-and-things/nextjs-cache-and-chains-the-stale-elixir

SOAPwn: Pwning .NET Framework Apps Through HTTP Client Proxies And WSDL

https://watchtowr.com/wp-content/uploads/SOAPwnwatchtowr_soappwn-research-whitepaper_10-12-2025.pdf

Cross-Site ETag Length Leak

https://blog.arkark.dev/2025/12/26/etag-length-leak

Lost in Translation: Exploiting Unicode Normalization

https://www.youtube.com/watch?v=ETB2w-f3pM4

ORM Leaking More Than You Joined For

https://www.elttam.com/blog/leaking-more-than-you-joined-for/

Novel SSRF Technique Involving HTTP Redirect Loops

https://slcyber.io/research-center/novel-ssrf-technique-involving-http-redirect-loops/

Successful Errors: New Code Injection and SSTI Techniques

https://github.com/vladko312/Research_Successful_Errors

====== Timestamps ======

(00:00:00) Introduction

(00:02:33) Parser Differentials: When Interpretation Becomes a Vulnerability

(00:11:02) XSS-Leak: Leaking Cross-Origin Redirects

(00:18:25) Playing with HTTP/2 CONNECT

(00:22:10) Next.js, cache, and chains: the stale elixir

(00:29:15) SOAPwn: Pwning .NET Framework Apps Through HTTP Client Proxies And WSDL

(00:34:27) Cross-Site ETag Length Leak

(00:41:47) Lost in Translation: Exploiting Unicode Normalization

(00:47:27) ORM Leaking More Than You Joined For

(00:54:07) Novel SSRF Technique Involving HTTP Redirect Loops

(00:58:40) Successful Errors: New Code Injection and SSTI Techniques

Episode 162: In this episode of Critical Thinking - Bug Bounty Podcast Justin and Joseph sit down with HackerOne Founder & CTO Alex Rice to discuss concerns of Using Hacker Data for AI and decreasing bounties.

Follow us on twitter at: https://x.com/ctbbpodcast

Got any ideas and suggestions? Feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

====== Links ======

Follow your hosts Rhynorater, rez0 and gr3pme on X: 

https://x.com/Rhynorater

https://x.com/rez0__

https://x.com/gr3pme

Critical Research Lab:

https://lab.ctbb.show/ 

====== Ways to Support CTBBPodcast ======

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

You can also find some hacker swag at https://ctbb.show/merch!

Today's Sponsor: Join Justin at Zero Trust World in March and get $200 off registration with Code ZTWCTBB26

https://ztw.com/

Today’s Guest: https://x.com/senorarroz

====== This Week in Bug Bounty ======

XML external entity: The ultimate Bug Bounty guide to exploiting XXE vulnerabilities

https://www.yeswehack.com/learn-bug-bounty/xml-external-entity-guide-xxe?utm_source=Critical_Thinking&utm_medium=Youtube&utm_campaign=XXE_Critical_Thinking&utm_id=XXE_CT

Bug Bounty Maturity Framework

https://bugbountymaturity.com/

====== Resources ======

Confidential Information and Confidentiality Obligations

https://www.hackerone.com/terms/general#:~:text=HackerOne%20may%20use%20Confidential%20Information%20to%20develop%20and/or%20improve%20its%20Services%20(for%20example%2C%20to%20identify%20trends%2C%20and%20to%20train%20AI%20models)%20provided%20such%20use%20does%20not%20result%20in%20disclosure%20of%20Confidential%20Information%20to%20unauthorized%20third%20parties

Ownership and Licenses

https://www.hackerone.com/terms/community#:~:text=8.%20Ownership%20and%20Licenses

I argued with an AI regarding HackerOne using Hacker reports to train PtaaS

https://bugbounty.forum/post/183ff0fc-eb9e-47f8-991d-c0aa5b0bba71

HackerOne PTaaS (likely training their AI on private reports data)

https://www.reddit.com/r/bugbounty/comments/1r5hixk/hackerone_ptaas_likely_training_their_ai_on/

What Makes Agentic PTaaS Different in Real Environments

https://www.hackerone.com/blog/agentic-penetration-testing-as-a-service#:~:text=Our%20agents%20are,real%20enterprise%20constraints

====== Timestamps ======

(00:00:00) Introduction

(00:08:44) HackerOne AI Terms of Service 

(00:24:56) Agentic PTaaS

(00:38:09) Selling data

(00:43:49) Decrease in Bounties

Episode 153: In this episode of Critical Thinking - Bug Bounty Podcast Matt Brown returns to talk with us about hacking robots, IOT hackbots, and his Zero-to-Hero Hardware Hacking Guide.

Follow us on twitter at: https://x.com/ctbbpodcast

Got any ideas and suggestions? Feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

====== Links ======

Follow your hosts Rhynorater, rez0 and gr3pme on X:

https://x.com/Rhynorater

https://x.com/rez0__

https://x.com/gr3pme

====== Ways to Support CTBBPodcast ======

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

You can also find some hacker swag at https://ctbb.show/merch!

Today’s Guest: Matt Brown

• https://x.com/nmatt0
• https://github.com/BrownFineSecurity/iothackbot

====== Resources ======

KeeYees USB Logic Analyzer Device

Saleae logic analyzer

XGecu

Hardware Hacking Tutorial by Make Me Hack

UART and SPI firmware extraction

UART Root Shell on Linux Router

UART Shell Jail and Unlocked Bootloader

Chinese IP Camera Firmware Extraction

Chip-Off Firmware Extraction

====== Timestamps ======

(00:00:00) Introduction

(00:01:22) Incremental Session Token Story and Matt Brown Intro

(00:10:42) Hardware Bug Bounty Scene & AI on Devices

(00:24:30) Hacking Human Robot

(00:41:33) Zero-to-Hero Hardware Hacking Guide

(01:01:47) IOT Hackbot

Episode 63: In this episode of Critical Thinking - Bug Bounty Podcast we welcome back Jason Haddix (From Episode 12) to talk about some updates to his The Bug Hunter's Methodology, as well as his own personal life and hacking journey. We talk about the start of his new company, and then venture into topics such as using threat intelligence and buying credentials from the dark web, recon techniques, and ways to integrate AI into your workflow (or target list).

Follow us on twitter at: @ctbbpodcast

We're new to this podcasting thing, so feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

https://twitter.com/0xteknogeek

https://twitter.com/rhynorater

------ Ways to Support CTBBPodcast ------

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

Sign up for Caido using the referral code CTBBPODCAST for a 10% discount. 

Today’s Guest:

https://twitter.com/Jhaddix

https://www.arcanum-sec.com/

Resources:

Dehashed

https://www.dehashed.com/

Flare

https://flare.io/

CSP Recon

https://github.com/edoardottt/csprecon

Timestamps:

(00:00:00) Introduction

(00:05:37) Updates to The Bug Hunter's Methodology

(00:14:46) Red Teaming

(00:21:29) Bug Bounty on the Dark Web

(00:36:19) FIS hunting

(00:47:59) New Recon Techniques 

(00:58:32) AI integrations and bounties

Episode 62: In this episode of Critical Thinking - Bug Bounty Podcast Justin and Joel are back with some additional research resources that didn’t make the Portswigger Top-Ten, but that are worth looking at.

Follow us on twitter at: @ctbbpodcast

Feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

------ Ways to Support CTBBPodcast ------

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

Sign up for Caido using the referral code CTBBPODCAST for a 10% discount. 

Resources:

Cool HTML Shit

https://twitter.com/jcubic/status/1764311080661082201

https://twitter.com/encodeart/status/1764218128374943764

Bug bounty Hunting Journeys

https://twitter.com/ajxchapman/status/1762101366057525521

https://monkehacks.beehiiv.com/p/monkehacks-02

Yelp Cookie Bridge Report

Deobfuscating/Unminifying Obfuscated Code

ChatGPT Source Watch

Web Security Research Reddit

Nahamsec Resources

Portswigger Nominations list

Abusing perspectives: https://hackerone.com/reports/2401115

PortSwigger CSS Exfiltration

https://github.com/PortSwigger/css-exfiltration

Timestamps:

(00:00:00) Introduction

(00:02:06) Cool HTML Shit

(00:15:31) Bug Bounty Journeys

(00:28:01) Yelp Cookie Bridge Bug

(00:37:56) Additional Research Resources

(00:46:34) CSS and abusing perspectives

Episode 61: In this episode of Critical Thinking - Bug Bounty Podcast Justin is joined by Jasmin Landry to share some stories about startup security, bug bounty, and the challenges of balancing both. He also shares his methodology for discovering OAuth-related bugs, highlights some differences between structured learning and self-teaching, and then walks us through a couple arbitrary ATO’s and SSTI to RCE bugs he’s found lately.

Follow us on twitter at: @ctbbpodcast

We're new to this podcasting thing, so feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

https://twitter.com/0xteknogeek

https://twitter.com/rhynorater

------ Ways to Support CTBBPodcast ------

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

Today’s Guest: Jasmin Landry

https://twitter.com/JR0ch17

Resources:

Dirty Dancing blog post

https://labs.detectify.com/writeups/account-hijacking-using-dirty-dancing-in-sign-in-oauth-flows/

OAuth 2.0 Threat Model and Security Considerations

https://datatracker.ietf.org/doc/html/rfc6819

OAuth 2.0 Security Best Current Practice

https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics

Timestamps:

(00:00:00) Introduction

(00:02:20) Meta Tag + DomPurify Bug

(00:09:36) Jasmin's Origin story

(00:28:23) Full time Bug bounty challenges

(00:36:57) Career jumps in Security and current Role

(00:47:32) OAuth Bug methodology and cool bug stories

(01:02:35) Social Engineering and Bug Bounty

(01:13:41) Arbitrary ATO bug

(01:19:41) SSTI to RCE bug

Episode 60: In this episode of Critical Thinking - Bug Bounty Podcast Justin and Joel review the Portswigger Research list of top 10 web hacking techniques of 2023.

Follow us on twitter at: @ctbbpodcast

Send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

------ Ways to Support CTBBPodcast ------

Hop on the CTBB Discord

We also do Discord subs at $25, $10, $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

Resources:

Top 10 web hacking techniques of 2023

1: Smashing the state machine

8: From Akamai to F5 to NTLM

3: SMTP Smuggling

4: PHP filter chains

(Bonus Read)

5: HTTP Parsers Inconsistencies

6: HTTP Request Splitting

7: How I Hacked Microsoft Teams

9: Cookie Crumbles

(Bonus Read)

10: Hacking root EPP servers to take control of zones

Timestamps:

(00:00:00) Introduction

(00:04:26) 1: Smashing the state machine

(00:11:56) 8: From Akamai to F5 to NTLM... with love

(00:17:11) 3: SMTP Smuggling

(00:26:27) 4: PHP filter chains

(00:36:40) 5: HTTP Parsers Inconsistencies

(00:44:56) 6: HTTP Request Splitting

(00:53:43) 7: How I Hacked Microsoft Teams

(01:02:25) 9: Cookie Crumbles

(01:11:36) 10: EPP Server Takeover

Episode 59: In this episode of Critical Thinking - Bug Bounty Podcast Justin and Joel discuss the concept of gadgets and how they can be used to escalate the impact of vulnerabilities. We talk through things like HTML injection, image injection, CRLF injection, web cache deception, leaking window location, self-stored XSS, and much more.

Follow us on twitter at: @ctbbpodcast

We're new to this podcasting thing, so feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

------ Ways to Support CTBBPodcast ------

Sign up for Caido using the referral code CTBBPODCAST for a 10% discount. 

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc. 

Resources:

Even Better

NahamSec's 5 Week Program

NahamCon News

CSS Injection Research

Timestamps:

(00:00:00) Introduction

(00:03:31) Caido's New Features

(00:15:20) Nahamcon News and 5 week Bootcamp and pentest opportunity

(00:19:54) HTML Injection, CSS Injection, and Clickjacking

(00:33:11) Image Injection

(00:37:19) Open Redirects, Client-side path traversal, and Client-side Open Redirect

(00:49:51) Leaking window.location.href

(00:57:15) Cookie refresh gadget

(01:01:40) Stored XXS

(01:09:01) CRLF Injection

(01:13:24) 'A Place To Stand' in  GraphQL and ID Oracle

(01:18:23) Auth gadgets, Web Cache Deception, & LocalStorage poisoning

(01:27:46) Cookie Injection & Context Breaks

Episode 58: In this episode of Critical Thinking - Bug Bounty Podcast we finally sit down with Youssef Samouda and grill him on his various techniques for finding and exploiting client-side bugs and postMessage vulnerabilities. He shares some crazy stories about race conditions, exploiting hash change events, and leveraging scroll to text fragments. 

Follow us on twitter at: @ctbbpodcast

We're new to this podcasting thing, so feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

https://twitter.com/0xteknogeek

https://twitter.com/rhynorater

------ Ways to Support CTBBPodcast ------

Sign up for Caido using the referral code CTBBPODCAST for a 10% discount. 

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc. 

Today’s Guest: https://twitter.com/samm0uda?lang=en

https://ysamm.com/

Resources:

Client-side race conditions with postMessage: 

https://ysamm.com/?p=742 

Transferable Objects

https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Transferable_objects

Every known way to get references to windows, in javascript:

https://bluepnume.medium.com/every-known-way-to-get-references-to-windows-in-javascript-223778bede2d

Youssef’s interview with BBRE

https://www.youtube.com/watch?v=MXH1HqTFNm0

Timestamps:

(00:00:00) Introduction

(00:04:27) Client-side race conditions with postMessage

(00:18:12) On Hash Change Events and Scroll To Text Fragments

(00:32:00) Finding, documenting, and reporting complex bugs

(00:37:32) PostMessage Methodology

(00:45:05) Youssef's Vuln Story

(00:53:42) Where and how to look for ATO vulns

(01:05:21) MessagePort

(01:14:37) Window frame relationships

(01:20:24) Recon and JS monitoring

(01:37:03) Client-side routing

(01:48:05) MITMProxy

Episode 57: In this episode of Critical Thinking - Bug Bounty Podcast, Justin and Joel are live from Miami, and recap their experience and share takeaways from the live hacking event. They highlight the importance of paying attention to client-side routing and the growing bug class of client-side path traversal. They also discuss the challenges of knowing when to cut your losses and the value of tracking time and setting goals. 

Follow us on twitter at: @ctbbpodcast

We're new to this podcasting thing, so feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

------ Links ------

Follow your hosts Rhynorater & Teknogeek on twitter:

https://twitter.com/0xteknogeek

https://twitter.com/rhynorater

------ Ways to Support CTBBPodcast ------

Sign up for Caido using the referral code CTBBPODCAST for a 10% discount. 

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc. 

Timestamps:

(00:00:00) Introduction

(00:03:50) Miami LHE Recap and Takeaways

(00:05:57) Keeping time and cutting losses.

(00:19:07) Roles and Goals

(00:23:33) OAuth

(00:28:52) HTML5 image to img Tip